Senior man wearing scientist uniform holding sample at laboratory
Palabras clave
senior,
elderly,
mature,
grey-haired,
person,
portrait,
adult,
caucasian,
old,
serious,
condensed,
concentration,
looking,
relaxed,
science,
research,
medicine,
scientist,
experiment,
technology,
medicals,
professional,
microscope,
chemist,
biology,
analysis,
men at work,
working,
tube,
test,
sitting,
goggles,
security,
sample,
holding,
clinic,
center,
hospital,
room,
indoor,
indoor,
laboratory,
laboratory,
chemistry,
pharmacy
){kind=link}